<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="./vue.js"></script>
</head>
<body>
    <div id="app">

       <myheader></myheader>


    </div>
    <script>
        new Vue({
            el:"#app",
            components:{

                "myheader":{

                    template:`
                    <div>
                        <h1>{{ title }}</h1>
                        <h2>标题2</h2>
                    </div>
                    `,

                    data(){
                        return {
                            title:"小米"
                        }
                    }
                }
            
            }
        })

    </script>
</body>
</html>